I have problem with my laptop. I bouth it about 4 months ago. Yesterday when I was using it, laptop started to switch on and off it self, but after few shutdowns everything went back to normal. Today when I tryed to use my laptop it wont switch on. What I have is black screen. When I press power button the lights are on and I can hear that fan begin to spin slowly and then it stops working at all. Its not working for about 20-30 seconds and then it starts to spin again. All I can see is black screen.